[ci skip] Fix #3618
diff --git a/system/libraries/Session/drivers/Session_redis_driver.php b/system/libraries/Session/drivers/Session_redis_driver.php
index 1cc4d75..5fbb522 100644
--- a/system/libraries/Session/drivers/Session_redis_driver.php
+++ b/system/libraries/Session/drivers/Session_redis_driver.php
@@ -272,7 +272,7 @@
{
if (isset($this->_redis, $this->_lock_key))
{
- if ($this->_redis->delete($this->_key_prefix.$session_id) !== 1)
+ if (($result = $this->_redis->delete($this->_key_prefix.$session_id)) !== 1)
{
log_message('debug', 'Session: Redis::delete() expected to return 1, got '.var_export($result, TRUE).' instead.');
}